In the Dakotas, members of the proud Lakota Nation rose in protest this week to join a 48-hour hunger strike in opposition to the Keystone XL pipeline—and all tar sands pipelines—they say will destroy precious water resources and ancestral lands in the U.S and in Canada.

On Sunday, dozens of hunger strikers and supporters marched at a rally against tar sands oil mining operations and pipelines in Eagle Butte, SD, a impoverished community on the Cheyenne River Indian Reservation, close to TransCanada’s 1,700 mile proposed Keystone XL pipeline route to refineries in the Gulf.

Lakota tribal members and their children drove to a camp in the rugged hills near the Missouri River to fast in solidarity with a hunger strike at the Bella Bella Community School in British Columbia.

Children at the school are protesting a plan to ship millions of barrels of oil through a potentially dangerous “Northern Gateway” pipeline that would pipe corrosive tar sands oil from Alberta to giant super tankers navigating Canada’s treacherous Pacific coast.